uboot/drivers/ata/sata.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2000-2005, DENX Software Engineering
   4 *              Wolfgang Denk <wd@denx.de>
   5 * Copyright (C) Procsys. All rights reserved.
   6 *              Mushtaq Khan <mushtaq_k@procsys.com>
   7 *                      <mushtaqk_921@yahoo.co.in>
   8 * Copyright (C) 2008 Freescale Semiconductor, Inc.
   9 *              Dave Liu <daveliu@freescale.com>
  10 */
  11
  12#include <common.h>
  13#include <ahci.h>
  14#include <dm.h>
  15#include <sata.h>
  16
  17#ifndef CONFIG_AHCI
  18struct blk_desc sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
  19#endif
  20
  21int sata_reset(struct udevice *dev)
  22{
  23        struct ahci_ops *ops = ahci_get_ops(dev);
  24
  25        if (!ops->reset)
  26                return -ENOSYS;
  27
  28        return ops->reset(dev);
  29}
  30
  31int sata_dm_port_status(struct udevice *dev, int port)
  32{
  33        struct ahci_ops *ops = ahci_get_ops(dev);
  34
  35        if (!ops->port_status)
  36                return -ENOSYS;
  37
  38        return ops->port_status(dev, port);
  39}
  40
  41int sata_scan(struct udevice *dev)
  42{
  43        struct ahci_ops *ops = ahci_get_ops(dev);
  44
  45        if (!ops->scan)
  46                return -ENOSYS;
  47
  48        return ops->scan(dev);
  49}
  50
  51#ifndef CONFIG_AHCI
  52#ifdef CONFIG_PARTITIONS
  53struct blk_desc *sata_get_dev(int dev)
  54{
  55        return (dev < CONFIG_SYS_SATA_MAX_DEVICE) ? &sata_dev_desc[dev] : NULL;
  56}
  57#endif
  58#endif
  59
  60#ifdef CONFIG_BLK
  61static unsigned long sata_bread(struct udevice *dev, lbaint_t start,
  62                                lbaint_t blkcnt, void *dst)
  63{
  64        return -ENOSYS;
  65}
  66
  67static unsigned long sata_bwrite(struct udevice *dev, lbaint_t start,
  68                                 lbaint_t blkcnt, const void *buffer)
  69{
  70        return -ENOSYS;
  71}
  72#else
  73static unsigned long sata_bread(struct blk_desc *block_dev, lbaint_t start,
  74                                lbaint_t blkcnt, void *dst)
  75{
  76        return sata_read(block_dev->devnum, start, blkcnt, dst);
  77}
  78
  79static unsigned long sata_bwrite(struct blk_desc *block_dev, lbaint_t start,
  80                                 lbaint_t blkcnt, const void *buffer)
  81{
  82        return sata_write(block_dev->devnum, start, blkcnt, buffer);
  83}
  84#endif
  85
  86#ifndef CONFIG_AHCI
  87int __sata_initialize(void)
  88{
  89        int rc, ret = -1;
  90        int i;
  91
  92        for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
  93                memset(&sata_dev_desc[i], 0, sizeof(struct blk_desc));
  94                sata_dev_desc[i].if_type = IF_TYPE_SATA;
  95                sata_dev_desc[i].devnum = i;
  96                sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
  97                sata_dev_desc[i].type = DEV_TYPE_HARDDISK;
  98                sata_dev_desc[i].lba = 0;
  99                sata_dev_desc[i].blksz = 512;
 100                sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz);
 101#ifndef CONFIG_BLK
 102                sata_dev_desc[i].block_read = sata_bread;
 103                sata_dev_desc[i].block_write = sata_bwrite;
 104#endif
 105                rc = init_sata(i);
 106                if (!rc) {
 107                        rc = scan_sata(i);
 108                        if (!rc && sata_dev_desc[i].lba > 0 &&
 109                            sata_dev_desc[i].blksz > 0) {
 110                                part_init(&sata_dev_desc[i]);
 111                                ret = i;
 112                        }
 113                }
 114        }
 115
 116        return ret;
 117}
 118int sata_initialize(void) __attribute__((weak, alias("__sata_initialize")));
 119
 120__weak int __sata_stop(void)
 121{
 122        int i, err = 0;
 123
 124        for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++)
 125                err |= reset_sata(i);
 126
 127        if (err)
 128                printf("Could not reset some SATA devices\n");
 129
 130        return err;
 131}
 132int sata_stop(void) __attribute__((weak, alias("__sata_stop")));
 133#endif
 134
 135#ifdef CONFIG_BLK
 136static const struct blk_ops sata_blk_ops = {
 137        .read   = sata_bread,
 138        .write  = sata_bwrite,
 139};
 140
 141U_BOOT_DRIVER(sata_blk) = {
 142        .name           = "sata_blk",
 143        .id             = UCLASS_BLK,
 144        .ops            = &sata_blk_ops,
 145};
 146#else
 147U_BOOT_LEGACY_BLK(sata) = {
 148        .if_typename    = "sata",
 149        .if_type        = IF_TYPE_SATA,
 150        .max_devs       = CONFIG_SYS_SATA_MAX_DEVICE,
 151        .desc           = sata_dev_desc,
 152};
 153#endif
 154